______________________________SUBSCRIBE ...... commonwealth.pl/ . United Kingdom of Poland and Lithuania refers to a series of acts and alliances between the Kingdom of Poland and the Grand Duchy of Lithuania that lasted for prolonged periods of time and led to the creation of the PolishLithuanian Commonwealth—the "Republic of the Two Nations"—in 1569 and eventually to the creation of a short-lived unitary state in 1791. The most important acts in the process of union were: * 1385 Union of Krewo— a personal union that brought Grand Duke of Lithuania Jogaila to Polish throne; * 1401 Union of Vilnius and Radom reassured sovereignty of Grand Duchy of Lithuania; * 1413 Union of Horodło - heraldic union, that granted many szlachta rights to Lithuanian nobility; * 1432 (143234) Union of Grodno a declarative attempt to renew closer union; * 1499 Union of Kraków and Vilnius personal union turns to dynastic union, recognises sovereignty of Lithuania and sescribes interation between two states; * 1501 Union of Mielnik - personal union renewed; * July 1, 1569 Union of Lublin — a real union that resulted in creation of the semi-federal, semi-confedederal Republic of the Two Nations; and * May 3, 1791 Polish Constitution of May 3, 1791: the Kingdom of Poland and the Grand Duchy of Lithuania were abolished, and a common state was created in their place. The changes were modified with the Reciprocal Guarantee of Two Nations that stressed the continuity of bi-national status of the state, and were reversed completely in 1792 under pressure of Russian Empire forces.